can anyone tell me how to code this excercise

Question

Create a program that calculates the sum 1+2+3+…+n where n is a number entered by the user.

can anyone code this excercise
by using while loop

Answer 1

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {

Scanner scan = new Scanner(System.in);
int n = scan.nextInt();

int i = 1;
int sum = 0;

while(i <= n){

if(i < n){

System.out.print(i + " + ");

}else{

System.out.print(i + " = ");
}

sum += i;
i++;
}

System.out.print(sum);
}
}

Answer 2

int n = 5; //scanner input
int sum = 0;

int i = 1;
while(i <= n) {
System.out.print(sum + " + " + i + " = ");
sum += i;
System.out.println(sum);
i++;
}

Answer 3

imagine result for n=5000

int n = 5000; //here use input from Scanner()
int sum=0, i=0;

while(++i <= n) {
sum += i;
}

System.out.println("sum of numbers (from 0 to "+n+") = "+sum);